1 | // SPDX-License-Identifier: GPL-2.0 |
2 | #undef _GNU_SOURCE |
3 | #define _GNU_SOURCE 1 |
4 | #undef __USE_GNU |
5 | #define __USE_GNU 1 |
6 | #include <unistd.h> |
7 | #include <stdlib.h> |
8 | #include <string.h> |
9 | #include <stdio.h> |
10 | #include <signal.h> |
11 | #include <sys/types.h> |
12 | #include <sys/select.h> |
13 | #include <sys/time.h> |
14 | #include <sys/wait.h> |
15 | |
16 | #define TEST(insn) \ |
17 | long double __attribute__((noinline)) insn(long flags) \ |
18 | { \ |
19 | long double out; \ |
20 | asm ("\n" \ |
21 | " push %1""\n" \ |
22 | " popf""\n" \ |
23 | " fldpi""\n" \ |
24 | " fld1""\n" \ |
25 | " " #insn " %%st(1), %%st" "\n" \ |
26 | " ffree %%st(1)" "\n" \ |
27 | : "=t" (out) \ |
28 | : "r" (flags) \ |
29 | ); \ |
30 | return out; \ |
31 | } |
32 | |
33 | TEST(fcmovb) |
34 | TEST(fcmove) |
35 | TEST(fcmovbe) |
36 | TEST(fcmovu) |
37 | TEST(fcmovnb) |
38 | TEST(fcmovne) |
39 | TEST(fcmovnbe) |
40 | TEST(fcmovnu) |
41 | |
42 | enum { |
43 | CF = 1 << 0, |
44 | PF = 1 << 2, |
45 | ZF = 1 << 6, |
46 | }; |
47 | |
48 | void sighandler(int sig) |
49 | { |
50 | printf("[FAIL]\tGot signal %d, exiting\n" , sig); |
51 | exit(1); |
52 | } |
53 | |
54 | int main(int argc, char **argv, char **envp) |
55 | { |
56 | int err = 0; |
57 | |
58 | /* SIGILL triggers on 32-bit kernels w/o fcomi emulation |
59 | * when run with "no387 nofxsr". Other signals are caught |
60 | * just in case. |
61 | */ |
62 | signal(SIGILL, sighandler); |
63 | signal(SIGFPE, sighandler); |
64 | signal(SIGSEGV, sighandler); |
65 | |
66 | printf("[RUN]\tTesting fcmovCC instructions\n" ); |
67 | /* If fcmovCC() returns 1.0, the move wasn't done */ |
68 | err |= !(fcmovb(0) == 1.0); err |= !(fcmovnb(0) != 1.0); |
69 | err |= !(fcmove(0) == 1.0); err |= !(fcmovne(0) != 1.0); |
70 | err |= !(fcmovbe(0) == 1.0); err |= !(fcmovnbe(0) != 1.0); |
71 | err |= !(fcmovu(0) == 1.0); err |= !(fcmovnu(0) != 1.0); |
72 | |
73 | err |= !(fcmovb(CF) != 1.0); err |= !(fcmovnb(CF) == 1.0); |
74 | err |= !(fcmove(CF) == 1.0); err |= !(fcmovne(CF) != 1.0); |
75 | err |= !(fcmovbe(CF) != 1.0); err |= !(fcmovnbe(CF) == 1.0); |
76 | err |= !(fcmovu(CF) == 1.0); err |= !(fcmovnu(CF) != 1.0); |
77 | |
78 | err |= !(fcmovb(ZF) == 1.0); err |= !(fcmovnb(ZF) != 1.0); |
79 | err |= !(fcmove(ZF) != 1.0); err |= !(fcmovne(ZF) == 1.0); |
80 | err |= !(fcmovbe(ZF) != 1.0); err |= !(fcmovnbe(ZF) == 1.0); |
81 | err |= !(fcmovu(ZF) == 1.0); err |= !(fcmovnu(ZF) != 1.0); |
82 | |
83 | err |= !(fcmovb(PF) == 1.0); err |= !(fcmovnb(PF) != 1.0); |
84 | err |= !(fcmove(PF) == 1.0); err |= !(fcmovne(PF) != 1.0); |
85 | err |= !(fcmovbe(PF) == 1.0); err |= !(fcmovnbe(PF) != 1.0); |
86 | err |= !(fcmovu(PF) != 1.0); err |= !(fcmovnu(PF) == 1.0); |
87 | |
88 | if (!err) |
89 | printf("[OK]\tfcmovCC\n" ); |
90 | else |
91 | printf("[FAIL]\tfcmovCC errors: %d\n" , err); |
92 | |
93 | return err; |
94 | } |
95 | |